Waterproof electric valve actuator

Abstract

The utility model discloses a waterproof electric valve actuator. According to the technical scheme, the sealing device comprises a shell assembly and a driving assembly arranged in the shell assembly, the shell assembly comprises an upper shell, an inner shell and a lower shell, a sealing groove used for containing a sealing ring is formed in the top of the lower shell, and the sealing ring is arranged in the sealing groove; a pressing rib which extends into the sealing groove and presses the sealing ring is arranged at the bottom of the inner shell, a buckle is arranged on the inner shell, a clamping groove is formed in the inner wall of the upper shell, and the upper shell and the inner shell are connected in a clamping mode; the driving assembly comprises a master control PCB and a motor gear transmission unit, and a touch switch protective cover is fixedly arranged on the master control PCB. According to the scheme provided by the utility model, efficient waterproof and stable operation are realized through a multi-sealing structure and modular design. According to the waterproof design of the shell assembly, the shell assembly is of a layered structure and is formed by nesting an upper shell, an inner shell and a lower shell, and the upper shell, the inner shell and the lower shell are tightly connected through buckles, screws and a sealing structure.

Description

Technical Field

[0001] This utility model relates to the field of electric valve actuators, and in particular to a waterproof electric valve actuator. Background Technology

[0002] Electric valve actuators are at risk of being submerged in water during use. Therefore, most electric valve actuators need to be designed with waterproofing in mind. However, the waterproofing design of existing electric valve actuators on the market is relatively simple and the waterproofing performance is poor. Especially after long-term operation, electric valve actuators often experience short circuits due to water contact. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the main purpose of this utility model is to provide a waterproof electric valve actuator with good waterproof effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a waterproof electric valve actuator, comprising a housing assembly and a drive assembly disposed within the housing assembly. The housing assembly includes an upper shell, an inner shell, and a lower shell. Observation windows are provided on the top of the upper shell and the inner shell. A transparent cover is fastened to the observation window of the upper shell. The lower shell contains several threaded posts corresponding to those of the inner shell. The inner shell and the lower shell are fixedly connected by screws. A sealing groove for accommodating a sealing ring is provided on the top of the lower shell. A sealing ring is disposed within the sealing groove. The inner shell has a sealing ring, and the bottom of the inner shell has a pressure rib that extends into the sealing groove and presses against the sealing ring. The inner shell has a buckle, and the inner wall of the upper shell has a slot. The upper shell and the inner shell are snap-fitted together. The drive assembly includes a main control PCB board and a motor gear transmission unit. A touch switch protective cover is fixedly installed on the main control PCB board. A button PCB board is also installed on the main control PCB board. A rubber button that extends into the observation window is fixedly installed on the button PCB board. The observation window has a through hole for the rubber button to extend out.

[0005] Preferably, the lower shell has arc-shaped protruding sides on both sides of its top, and the upper shell has arc-shaped notches on both sides corresponding to the arc-shaped protruding sides. The top of the arc-shaped protruding sides is provided with a positioning strip, and the arc-shaped notches are provided with positioning grooves corresponding to the positioning strips.

[0006] Preferably, the bottom of the lower shell is connected to the power line via a waterproof connector, and the end of the power line is connected to the main control PCB board.

[0007] This invention offers the following advantages over existing technologies: it achieves efficient waterproofing and stable operation through a multi-layered sealing structure and modular design. The actuator consists of two main parts: a housing assembly and a drive assembly. The synergistic effect of these parts ensures its reliability in complex environments. The housing assembly features a layered structure, consisting of an upper shell, an inner shell, and a lower shell nested together, tightly connected by snap-fits, screws, and sealing structures. Attached Figure Description

[0008] Figure 1 This is a structural schematic diagram of a waterproof electric valve actuator according to the present invention;

[0009] Figure 2 Partial breakdown of a waterproof electric valve actuator according to this utility model. Figure 1 ;

[0010] Figure 3 Partial breakdown of a waterproof electric valve actuator according to this utility model. Figure 2 ;

[0011] Figure 4 This is a fully exploded view of a waterproof electric valve actuator according to this utility model.

[0012] In the diagram: 1. Upper shell; 2. Inner shell; 3. Lower shell; 4. Observation window; 5. Transparent cover; 6. Threaded post; 7. Sealing groove; 8. Sealing ring; 9. Pressing; 10. Buckle; 11. Slot; 12. Main control PCB board; 13. Motor gear transmission unit; 14. Touch switch protective cover; 15. Button PCB board; 16. Rubber button; 17. Through hole; 18. Arc-shaped raised side; 19. Arc-shaped notch; 20. Positioning strip; 21. Positioning groove; 22. Waterproof connector; 23. Power line. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] like Figure 1As shown, a waterproof electric valve actuator includes a housing assembly and a drive assembly disposed within the housing assembly. The housing assembly includes an upper shell 1, an inner shell 2, and a lower shell 3. Observation windows 4 are provided on the top of the upper shell 1 and the inner shell 2. A transparent cover 5 is fastened to the observation window 4 of the upper shell 1. The lower shell 3 has several threaded posts 6 corresponding to those of the inner shell 2 inside. The inner shell 2 and the lower shell 3 are fixedly connected by screws. A sealing groove 7 for accommodating a sealing ring 8 is provided on the top of the lower shell 3, and the sealing ring 8 is disposed within the sealing groove 7. An extension tube is provided at the bottom of the inner shell 2. A rib is pressed into the sealing groove 7 and onto the sealing ring 8. A buckle 10 is provided on the inner shell 2, and a slot 11 is provided on the inner wall of the upper shell 1. The upper shell 1 and the inner shell 2 are snap-fit ​​connected. The drive assembly includes a main control PCB board 12 and a motor gear transmission unit 13. A touch switch protective cover 14 is fixedly provided on the main control PCB board. A button PCB board 15 is also provided on the main control PCB board 12. A rubber button 16 is fixedly provided on the button PCB board 15 and extends into the observation window 4. A through hole 17 is provided in the observation window 4 for the rubber button 16 to extend out.

[0015] Preferably, the lower shell 3 has arc-shaped protruding side edges 18 on both sides of its top, and the upper shell 1 has arc-shaped notches 19 on both sides corresponding to the arc-shaped protruding side edges 18. The top of the arc-shaped protruding side edges 18 is provided with a positioning strip 20, and the arc-shaped notches 19 are provided with positioning grooves 21 corresponding to the positioning strips 20.

[0016] Preferably, the bottom of the lower shell 3 is connected to the power line 23 via a waterproof connector 22, and the end of the power line 23 is connected to the main control PCB board.

[0017] This waterproof electric valve actuator is a valve drive device specifically designed for humid or underwater environments. Its core objective is to achieve efficient waterproofing and stable operation through a multi-layered sealing structure and modular design. The actuator consists of two main parts: a housing assembly and a drive assembly. The synergistic effect of these parts ensures its reliability in complex environments. The housing assembly features a layered structure, consisting of an upper shell 1, an inner shell 2, and a lower shell 3 nested together. These three parts are tightly connected by snap-fit ​​10, screws, and a sealing structure.

[0018] Triple sealing protection: The top of the lower shell 3 is provided with an annular sealing groove 7 and an internal elastic sealing ring 8. The annular pressure rib at the bottom of the inner shell 2 is embedded in the sealing groove 7 and presses the sealing ring 8 to form the first waterproof barrier. The upper shell 1 and the inner shell 2 are locked together by a buckle 10-slot 11 structure. Combined with the screw fixing of the lower shell 3 and the inner shell 2, the sealing ring 8 is further compressed to enhance the sealing performance.

[0019] Anti-misalignment structure: The arc-shaped protruding side 18 on the top of the lower shell 3 matches the arc-shaped notch 19 of the upper shell 1. At the same time, the positioning strip 20 and the positioning groove 21 are engaged to ensure that the shells are precisely aligned during assembly and to avoid sealing failure due to misalignment.

[0020] Bottom waterproofing: The power line 23 is connected to the lower shell 3 through a waterproof connector 22. The connector is equipped with a rubber sealing ring to prevent moisture from seeping into the shell along the cable.

[0021] Protection and control of the drive components: The drive components include the main control PCB board, the motor gear transmission unit 13 and the human-machine interaction module. Its design takes into account both functionality and waterproof requirements.

[0022] Circuit protection: The main control PCB board 12 is equipped with a touch switch protective cover 14 to isolate moisture and dust; the button PCB board 15 is connected to the outside through the rubber button 16. The rubber material has both elasticity and sealing properties. When pressed, it deforms to trigger the switch. Under normal conditions, it is close to the edge of the through hole 17 of the observation window 4 to block the path of moisture intrusion.

[0023] Visual operation: The observation window 4 on the upper shell 1 is covered by a transparent cover, which is installed by snap-fit ​​and the edges are sealed with silicone gaskets, which facilitates observation of the internal condition and prevents external moisture from penetrating.

[0024] The structurally coordinated waterproofing mechanism features a layered shell design that creates a "maze-like" waterproofing path: the screw fixing of the lower shell 3 to the inner shell 2 provides rigid support, and the sealing ring 8 achieves static sealing under pressure; the snap-fit ​​connection of the upper shell 1 1 allows for quick assembly and disassembly, while the cooperation of the arc-shaped notch 19 and the raised structure maintains the integrity of the sealing surface. The motor gear unit and PCB board are both fixed to the inner shell 2, forming an independent cavity between them and the lower shell 3. Even if a small amount of external water seeps in, it can be discharged through the drainage channel, avoiding contact with the core components.

[0025] This actuator achieves an IP67 or higher protection rating through multi-layer sealing, precise structural matching, and material optimization. Its design highlights lie in the organic combination of mechanical seals (rib-sealing ring 8), physical isolation (waterproof connector 22), and structural anti-misalignment (positioning strip 20). While ensuring waterproof performance, it also considers ease of maintenance and operational visibility, making it suitable for valve control needs in harsh environments such as waterworks and chemical plants.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A water-proof electric valve actuator, characterized in that: The application relates to a shell assembly and a driving assembly arranged in the shell assembly, the shell assembly comprises an upper shell, an inner shell and a lower shell, the top of the upper shell and the inner shell is provided with an observation window, the upper shell is provided with an upper cover transparent cover which is buckled on the observation window, the lower shell is provided with a plurality of threaded columns which are arranged correspondingly to the inner shell, the inner shell and the lower shell are fixedly connected through screws, the top of the lower shell is provided with a sealing groove for arranging a sealing ring, the sealing groove is provided with the sealing ring, the bottom of the inner shell is provided with a pressing rib which extends into the sealing groove and is pressed on the sealing ring, the inner shell is provided with a buckle, the inner wall of the upper shell is provided with a clamping groove, and the upper shell and the inner shell are clampingly connected; the driving assembly comprises a general control PCB and a motor gear transmission unit, the general control PCB is fixedly provided with a touch switch protection cover, the general control PCB is further provided with a key PCB, the key PCB is fixedly provided with rubber keys which extend into the observation window, and the observation window is provided with through holes for the rubber keys to extend out.

2. A water-proof electric valve actuator according to claim 1, characterized in that: The top of the lower shell is provided with arc-shaped convex side edges on both sides, the upper shell is provided with arc-shaped notches which are arranged correspondingly to the arc-shaped convex side edges, the top of the arc-shaped convex side edges is provided with positioning strips, and the arc-shaped notches are provided with positioning grooves which are arranged correspondingly to the positioning strips.

3. The water-proof electric valve actuator according to claim 1, wherein: The bottom of the lower shell is connected with a power line through a waterproof joint, and the end of the power line is connected with the main control PCB.

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